Micro-ring based manipulation of magnetized particles

Punyabrahma, P and Bathe, R and Jayanth, GR (2022) Micro-ring based manipulation of magnetized particles. In: Review of Scientific Instruments, 93 (4). ISSN 0034-6748

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Abstract

The micromanipulation of untethered magnetic particles facilitates actuation, assembly, and characterization of samples for micro- and nanotechnology applications. Conventionally, macro-scale electromagnets combined with visual servo control are employed to manipulate untethered particles. Here, we propose to employ a micro-ring actuator and a strategy based on parametric excitation for manipulation of magnetized particles against a surface in a liquid medium, which does not require visual feedback. Experimentally, the system has been employed to smoothly manipulate magnetic particles of diameter in the range 30-50 μm to move along predefined trajectories. Subsequently, the particles have been demonstrated to be manipulated into a conventionally inaccessible region beneath the re-entrant walls of a micromachined silicon chip.

Item Type:	Journal Article
Publication:	Review of Scientific Instruments
Publisher:	American Institute of Physics Inc.
Additional Information:	The copyright of this article belongs to the American Institute of Physics Inc.
Keywords:	Nanomagnetics; Visual servoing, Liquid media; Macroscales; Magnetic particle; Micro manipulation; Micro technology; Microrings; Nanotechnology applications; Parametric excitations; Ring actuators; Visual servo control, Visual communication
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	20 May 2022 09:15
Last Modified:	20 May 2022 09:15
URI:	https://eprints.iisc.ac.in/id/eprint/72372

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